Convection Currents and the Mantle


Vocabulary


Heat Transfer: The transfer of heat from a warm object to a cold object.
Three Types of Heat Transfer: Radiation, Conduction, Convection
Radiation: Heat that is transfered through empty space
Conduction: Heat transfered by direct contact of particles of matter
Convection: Heat transfered by movement of hot liquids or fluids
Density: A measure of how much mass there is in a volume of substance
Convection Current: The flow that transfers heat within a fluid.

Outline


Radiation

  • Suns heat, Fires Heat
    • Heat transfered by empty space

Conduction

  • touching anything thats hot
    • Particles near bottom of the spoon vibrate faster as they are heated
  • Spoon in a pot of hot soup
    • Would get hotter slowly

Convection

  • moves in cycle, cold water moves from top to bottom and heats back up then goes back up to the top
    • This is called convection currents

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